Water tap or faucet.



J. B. E. nELsUc. WATER TAP 0R FAUGBT.

APPLICATION FILED APB..26, 1910.

Patented Dec; 17,1912.

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COLUMBIA PLANolAPI-I Cu..wASHxNGTON. D. c.

" sure is used.

, UNITED STATEsrATENT OFFICE."

. JEANBAPTISTE EMILE nEEsUc,A or PARIS, FRANCE.

WATER TAP 0R FAUCVET.

Specification of Letters Patent.

. Application filed April 26, 1910. Serial No. 557,739. .f

intenten Dee. 17,1912.

To all whom may concern.' y

Be it kno-wn that I, JEAN BAP'JISTE EMlLE DELsUo, a citizen of the Republic of France, residing at Paris, inthe Republic of France, have invented certain new and useful Improvements in Vater Taps or Faucets, of which the following is a specification.

This invent-ion has for itsobject a constructive arrangementy of a tap, the principle of which is already known, and which is adapted to be used either as, an ordinary tap, or as a pump and air compressor, the air thus compressed being more particularly intendedk for raising liquids, for instance beer in saloons, but capable of being utilized for any other purpose where air under pres-v The part of the tap which forms the pump comprises a differential piston to which the hydraulic pressure com- 120 municates a reciprocatory movement owing to the use of a double valve of peculiar fo-rm and two suitably arranged springs. This tap is distinguished substantially by the combination as a whole of `very important constructivearrangements enabling it to be easily made and its good working and easy maintenance insured. w

In the accompanying drawings the gure is a longitudinal axial section of the preferred form of construction of the tap which forms the object of this invention.

The apparatus comprises a member a provided with a water supply pipe b, in which a plug c moves which closes or opens the admissionaperture d. This water admission l serves for operating the apparatus as a cpump. An external` pipe f with `which a second water'supply pipe directly orindirectly connects is attached to the member a.

In this'pipe f a, cylinder g. isl'arranged in which is a piston hsurmounted bya spring i and connected by a rod j (which carries ak nut 7c and works only by traction) to a piston of larger diameter l. This piston works in a cylinder 'm attached to the part a and adapted to communicate by holes n with a chamber 0 which communicates through a by-pass or duct with lanother chamber p and from thence with the outsideby the pipe f. TA double valve formed by a hollow tube g, the wall of which is perforated at r andwhich is provided with a head or conical plug g surmountedby a kspring s, works in the lower part m of the large cylinder m. A piece u bored to* allow the rod j to pass through it with slight friction, is elastically andytightlyconnected i withy the lower part of this hollow tubeg byL a- `piece of india rubber piping 1t. The upper extremity of thek large cylinder m is closed byk a screwed cap o and a packing or washer w.' This capcommunicates by a ball valve 'with the external air, and by aballretaining valvery with "the pipe for com- Y.

pressing the air. The retaining valve yis placed just above the suction valve m. The cap may kthus be completely turned on the lathe, which would not be possible with juxtaposed valves.

The action is as follows z-When the valve c is opento cause the apparatus to actas a pump, water under pressure enters at el, acts on the little lower piston It, then vpasses through ythe hole r andthe pipev g of the valve into the large cylinder mand acts `on the piston Z. -Thelatter being larger than the piston LI, in rising it draws the piston 7L by means yof the rod y', and this lattery piston compresses-the spring fl against the part u unt-il the upwardly acting ,pressure thus transmitted to the valve, exceeds the downwardly exerted pressure of the water of the cylinder m on the conical plug gof this valve.' The latter then lifts and the spring with the outside air, the whole of the pis- 'i tons re-.descend under the pressure exerted by the 'water on the upperendof the piston 7L. In the course ofthe descent the piston Z compresses the spring s, which effects the closing of the valve. The operation then continues in the manner describedand soforth. The movement of the `piston Z- in the upper cylinder is used for pumping air by the valves m and y.

It will be readily seen that the rod j has only for its effect to drawA one of ,they two pistons under the action of the other. f The result is ,that it works const-antlyfbytraction,

so thatit may be ofvery small diameter,

The rod j is not ixed to the pistons. The latter may on the contrary slide on it, so that if the pressure of the water ceases, positions which are relatively different to those which they occupy during the working of the apparatus may be given to the pistons. When it is desired to examine the upper piston and its packing, this 'arrange ment enables the piston to be displaced without risking bending the rod. The effective length of this rod may also be very easily diminished or increased by means of the nut 7c so as to regulate the apparatus, in order to give it a maximum air pressure. In fact the downward pressure which is exerted on the valve is proportionate to the water pressure beneath the large piston. The water pressure itself is also in direct proportion to the pressure at which the air is compressed at the end of the stroke, therefore the action on the valve is itself in direct proportion to the said air pressure. As, however, the compression of the lower spring z' may serve as a measure of the downward action exerted on the valve, the result is that the compression of the spring may also serve as a measure of the air pressure hereinbefore indicated. On the other hand, the upper piston will approach more or less the end of the pumpcylinder, according as the compression of the spring is greater or less. It is thus evident that the length of the rod may be regulated in such a way that when the air is compressed at a given pressure, the upper piston contacts with the end of the pump cylinder before the valve is lifted. At this moment the apparatus is stopped.

As has been shown, the valve is in two parts g and u connected by the piece of india rubber piping t. The reason of this arrangement is the following :-It is impor tant that the hole bored in u for the passage of the rod shall be as exact as possible. It is, however, extremely diflicult in practice to obtain this perfect centering of the hole, and with valves in a single piece there are great risks either of having friction on the rod in the bottom of the valve suiiicient to prevent the valve working, or, of the valve not dropping on to its seat. The elastic. tight connection hereinbefore described allows sufficient play to prevent these disadvantages.

The upper conical part Q of the valve bearing on a conical seat has a double closing action. It interrupts both the communication between the large cylinder 'm and the outside, and between the small cylinder g and the outside. If in fact the adjustment of the valve tube in its lodgment is relied upon for producing the separation between tlie small cylinder g and the outside, careful fitting is necessary and wear will rapidly destroy the action. rI`he arrangement shown however allows of more play being given to the valve tube and wear can only improve the closing. This valve thus constitutes a triple means of closing, viz. at the top between the large and theV small cylinders, on the one hand, and the outside on the other hand, and at the bottom between the small and the large cylinder by the hole r. A 4slightly countersunk part in the lower extremity of the part m receives the corresponding surface of the valve.

The piston Z is of the type called a plun ger piston, which allows of the use of a packing formed by a shaped leather or an india rubber washer of the profile indicated, which the pressure of the water presses on the piston and which is maintained as shown. It is evident that this packing may be very easily inspected and changed, an import-ant point seeing that the fouling and wear of this packing must be avoided, in order that the apparatus may properly work.

I declare that what I claim is The combination with a cylinder, of a smaller cylinder, pistons slidably mounted therein, means adjustably connecting said pistons, a tubular member slidably mounted on said means for opening and cutting off communication between said cylinders, Said tubular member comprising a conical portion, the body of said tubular member being provided with an opening, and a member of smaller bore 'than said tubular member tightly joined to the latter, spring means carried by one of said pistons adapted to op` crate said tubular member at a greater' speed than that of said pistons, spring means carried by said conical portion adapted to be operated by t-he other of said pistons for reversing the movement of said tubular member, and an inlet opening provided intermediate the pistons through which is adapted to pass the fluid for operating the pistons lin either direction, as set forth.

In witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

JEAN BAPTISTE EMILE DELSUC.

I-I. C. CoxE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of 1 atents.

Washington, D. C. 

